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For an SN^(2) reaction of CH(3)-overset(...

For an `SN^(2)` reaction of `CH_(3)-overset(Me)overset(|)CH-CH_(2)-X` the most effective nucleophile will be

A

`MeO^(-)`

B

C

`Me_(2)CHO^(Theta)`

D

`Me_(2)CH_(2)O^(-)`

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The correct Answer is:
A
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